Lenovo ThinkPad 365E-ED ThinkPad 365, SelectaDock I - Hardware Maintenance Man - Page 46

does not occur again, recheck the connector. If the problem remains, replace the device, and then the system board. TrackPoint III Checkout The TrackPoint automatically compensates to adjust the pointer sensor. During this process, the pointer moves on the screen automatically for a short time. This self-acting pointer movement can occur when a slight, steady pressure is applied to the TrackPoint pointer while the computer is powered on or while the system is running, or re-adjustment is required because the temperature has exceeded its normal temperature range. This symptom does not indicate a hardware problem. No service actions are necessary if the pointer movement stops in a short period of time. If either the pointing stick or the click button will not work, do the following actions one at a time to correct the problem. Do not replace a non-defective FRU. Reseat the three keyboard cables. Replace the keyboard. Replace the keyboard card. Replace the system board. Audio Card Checkout Do the following to run the audio tests. Go to a DOS full screen, press Ctrl+Alt+F11 to access the setup utility. Note: The setup screen can only be accessed at a full-screen DOS prompt. Use the arrow keys to select Audio, then use the space bar to toggle the audio selection to enabled (IRQ 7). Set the volume control to mid range. Press Esc then F4 to save and reboot. Listen for the sounds. If the audio card does not produces any sound during reboot, replace the Audio card. If the problem remains, replace the system board. Diskette Drive Checkout Important The ThinkPad 365 does not support both an internal and external drive simultaneously. Do the following to isolate the problem to a controller, drive, or diskette. A scratch, write enabled, non-defective 2HD diskette is required. Make sure that the diskette does not have more than one label attached to it. Multiple labels can cause damage to the drive or can cause the drive to fail. 34 IBM Mobile Systems - ThinkPad HMM Volume 3